Examine source code of MB Beige Light

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MB Beige Light",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(255, 255, 255)",
      "toolbar_text": "rgb(71, 71, 71)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(46, 46, 46)",
      "toolbar_field": "rgb(226, 221, 214)",
      "toolbar_field_text": "rgb(30, 19, 12)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(41, 41, 41)",
      "icons": "rgb(0, 0, 0)",
      "tab_selected": "rgb(225, 220, 216)",
      "tab_text": "rgb(0, 0, 0)",
      "toolbar_bottom_separator": "rgb(255, 255, 255)",
      "toolbar_field_border": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(255, 255, 255)",
      "toolbar_vertical_separator": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f4c57914-1c40-41d3-9d49-8aa78bb80225}"
    }
  }
}